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SmartLine Second Phone Number vs its rivals

Side-by-side comparison against SmartLine Second Phone Number's closest competitors — identity, store metrics, ratings & sentiment, and strategic intel.

SmartLine Second Phone Number
This App
Burner: Second Phone Number
Nemesis
Google Voice
Contender
Text Free: Second Phone Number
Contender
Hushed: US Second Phone Number
Contender
Grasshopper
Contender
NextivaONE
Peer
RingCentral
Peer
Dialpad Meetings
Peer
Line2 - Second Phone Number
Peer
Core Identity
DeveloperGoDaddy Mobile LLCAd Hoc Labs, IncGooglePinger, Inc.AffinityClick Inc.GrasshopperNextivaRingCentral, IncDialpad, Inc.J2 Web Services, Inc.
CategoryBusinessUtilitiesProductivitySocial NetworkingUtilitiesBusinessBusinessBusinessProductivityProductivity
PlatformiOS, AndroidAndroid, iOSiOS, AndroidiOS, AndroidiOS, AndroidAndroid, iOSAndroid, iOSiOS, AndroidAndroid, iOSAndroid, iOS
Store Metrics
Rating4.7 / 54.7 / 54.3 / 54.7 / 54.6 / 54.8 / 54.1 / 54.8 / 54.4 / 54.4 / 5
Ratings Count43,97592,15761,654574,65921,83245,6416,76672,60055219,745
PriceFreeFreeFreeFreeFreeFreeFreeFreeFreeFree
Release DateApr 28, 2017Apr 1, 2012Nov 16, 2010Dec 15, 2010Mar 4, 2013Feb 19, 2013Jan 13, 2014Oct 23, 2013Dec 17, 2012Sep 1, 2009
Last UpdatedAug 1, 2024May 5, 2026May 1, 2026Apr 23, 2026Mar 26, 2026Apr 17, 2026Apr 10, 2026Mar 24, 2026Mar 31, 2026Apr 7, 2026
Sentiment & Reviews
Sentimentterribleterriblemixednegative--negative---
Score15/10015/10045/10028/100--15/100---
Praises
  • Core communication functionality provided reliable business connectivity for long-term users prior to recent migration
  • Reliable call and text quality provides functional utility for users needing secondary communication lines
  • Reliable secondary phone number management keeps personal and business communications organized across multiple devices
  • Utility as a Second Number
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  • Remote work connectivity allows team members to reach office colleagues from any location
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Complaints
  • Forced migration to the new messaging product causes total loss of access to business numbers
  • Misleading free trial offers result in immediate unauthorized charges to user payment methods
  • Mandatory identity verification requirements alienate users seeking anonymous or private communication channels
  • Misleading 'Free' Branding
  • Paywalled Verification Codes
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  • Incoming calls fail to ring or drop immediately after the latest update
  • Inability to block spam calls effectively disrupts daily business operations and productivity
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Requests
  • Transparent communication and reliable support during the mandatory service migration process
  • Transparent pricing models that clearly distinguish between free and paid feature sets
  • Integration with native messaging platforms would improve the user experience for daily communication
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  • Granular notification controls to distinguish between personal and business incoming calls
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Strategic Intel
Strengths
  • Cellular-based calling ensures professional audio quality [Market Position]
  • GoDaddy ecosystem integration provides a clear onboarding path for existing business customers [Distribution]
  • Privacy-first workflow reduces friction for casual users
  • Color-coded inboxes increase session duration for power users
  • Brand recognition in major tech publications
  • Workspace integration provides frictionless deployment for existing Google users
  • Cross-device sync increases daily utility
  • Massive social proof with 1.1M+ reviews
  • Strong grossing performance (#11 in category)
  • Unique 24-hour number change capability
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  • CRM integrations embed Nextiva into existing enterprise software stacks, creating high switching costs.
  • XBert AI automation provides a high-value labor-reduction mechanism for enterprise clients.
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Weaknesses
  • Forced service migration causing total account lockout [User Sentiment]
  • Technical instability and frequent app crashes [User Sentiment]
  • Opaque subscription management and billing practices [User Sentiment]
  • High refund surge due to misleading trial billing
  • Persistent message delivery failures
  • Subscription-only model limits top-of-funnel conversion
  • Identity verification requirements alienate privacy-focused users
  • Message delivery failures disrupt professional communication
  • High friction in 'Free' branding vs. paid features
  • Paywalled verification codes driving negative sentiment
  • Technical bugs in account creation/onboarding
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  • Incoming call reliability failures persist post-update.
  • Spam filtering is non-functional for many users.
  • Notification badges fail to clear, requiring manual app refreshes.
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Pricingsubscriptionsubscriptionsubscriptionfreemiumsubscriptionsubscriptionsubscriptionfreemiumfreesubscription
Momentum-ActiveActiveMaintenanceIntenseIntenseMaintenance-IntenseIntense
Update Cadence-5 versions, 2 majors/6mo, ~10d avg5 versions, ~6d avg5 versions, ~9d avg5 versions5 versions2 versions, ~27d avg-5 versions5 versions

Compare SmartLine Second Phone Number head-to-head

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by SmartLine Second Phone Number, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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